I find it useful for larger sites...for a simple 5-7 page site I usually just submit a basic sitemap when I sign up in Google/Yahoo/Live webmaster accounts.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.